After a stint between 1974 and 1978 as the host of the Thames Television murder-mystery game show Whodunnit?, Pertwee took the starring role in Worzel Gummidge, based on the books written by Barbara Euphan Todd. First aired in 1979 on ITV, the series saw Pertwee as a scarecrow, as well as using several comedic voices. The show was an immediate hit and ran on the channel until 1981. Keen to continue beyond this, Pertwee campaigned for the series and it was picked up by a New Zealand TV network in 1987. Worzel Gummidge Down Under aired for the next two years and was screened in the UK on Channel 4. In 1995, Pertwee played the role one last time in a one-off special for ITV, which celebrated 40 years of the channel. Pertwee played the title character in Worzel Gummidge, the musical, book and lyrics by Keith Waterhouse and Willis Hall, music by Denis King, which opened at London's Cambridge Theatre in December 1981, co-starring Una Stubbs and Geoffrey Bayldon. Pertwee also recorded an album, Worzel Gummidge Sings, as well as a Christmas single.